Arab slave trade was the pract[/IMG][1] The trade was conducted through slave markets in the Middle East, North Africa and the Horn of Africa, with the slaves captured mostly from Africa's interior.Historians estimate that between 650 and the 1960s, 10 to 18 million people were enslaved by Arab slave traders and taken from Europe, Asia and Africa across the Sahara, the Red Sea, and the western Indian Ocean.Read the rest here:https://en.wikipedia.org/wiki/Arab_slave_trade